KR20100113562A - Linear generator - Google Patents

Abstract

The present invention provides a linear power generation apparatus which can achieve the simplification and the weight reduction of the structure of the power generation apparatus and can stably obtain the generation of good efficiency. The fluid pressure in the left fluid pressure chamber 4 in contact with the left end wall 2 of the cylinder 1 and the fluid pressure in the right fluid pressure chamber 5 in contact with the right end wall of the cylinder 1 are connected to the piston 6 in the cylinder 1. And a hydraulic pressure cylinder structure in which the piston 6 is reciprocally moved in the axial direction, alternately applied to the left hydraulic pressure surface and the right hydraulic pressure chamber in contact with the left fluid pressure chamber 4 of the piston 6. 5, a permanent magnet zone 9 is formed between the superior pressure surface in contact with the superior pressure surface, and the left fluid pressure chamber and the right fluid pressure chamber are formed in the passage wall between the left end wall and the right end wall 2, 3 of the cylinder 1; The electromotive coil zone 11 which spans (4, 5) is formed, and generation | occurrence | production of the electromotive coil zone 11 is induced by reciprocating movement of the piston 6 which has the permanent magnet zone 9 to the axial direction. It is a linear power generation apparatus made into the structure.

Description

Linear Power Generator {LINEAR GENERATOR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear power generation apparatus configured to induce power generation between a piston and a cylinder constituting a hydraulic cylinder.

Patent document 1 discloses a power generation apparatus in which a free piston engine (fluid pressure cylinder) and a linear generator generate power in cooperation.

The free piston engine (fluid pressure cylinder) constituting the power generator is a single combustion chamber type cylinder having a combustion chamber (fluid pressure chamber) at one end of the cylinder, similar to the cylinder structure of an automobile engine, and combustion of fuel in the single combustion chamber. The piston is moved in one direction only by the fluid pressure generated by the explosion, and the linear generator is driven as an electric motor to move the piston in the other direction so that the intake stroke, compression stroke and exhaust stroke of the free piston engine are performed. It has a structure which draws out power generation output from the said linear generator at the time of combustion explosion of an engine.

Japanese Patent Application Publication No. 2005-318708

The linear power generation device according to Patent Document 1 is designed such that a combustion explosion of a free piston engine (fluid pressure cylinder) consisting of a single combustion chamber cylinder and a function as an electric motor of the linear generator cooperate to reciprocate the piston of the free piston engine in the axial direction. In other words, the coil of the linear generator is used as both an electric motor and a generator, and combined with a control device for controlling the coil, the structure is complicated and the cost is high.

In addition, since the piston moves in one direction by combustion explosion and in the other direction by an electric motor, there is a problem of inferior power generation efficiency.

In addition, since the free piston engine and the linear generator are connected in series, the length is long and the size is large, and an excessive occupied space is required.

SUMMARY OF THE INVENTION The present invention provides a linear power generation apparatus that solves the above problems by causing generation of power generation between a piston and a cylinder constituting a fluid pressure cylinder.

In summary, the linear power generation apparatus according to the present invention alternately applies the fluid pressure in the left fluid pressure chamber in contact with the left end wall of the cylinder and the fluid pressure in the right fluid pressure chamber in contact with the right end wall of the cylinder to the piston in the cylinder. It has a fluid pressure cylinder structure which reciprocates in an axial direction, and has a permanent magnet between a left hydraulic pressure surface in contact with the left fluid pressure chamber of the piston and an even pressure surface in contact with the right fluid pressure chamber. Forming a zone, and forming a mechanism coil zone leading to the left fluid pressure chamber and the right fluid pressure chamber in the passage wall between the left end wall surface and the right end wall surface of the cylinder, and reciprocating movement in the axial direction of the piston having the permanent magnet zone. This structure has a configuration of inducing power generation in the above-described electromotive coil band.

The left fluid pressure chamber and the right fluid pressure chamber constitute a combustion chamber, and are configured to move the piston in the axial direction by the fluid pressure caused by the combustion explosion of the fuel in the combustion chamber.

Alternatively, a high pressure fluid is alternately supplied from the outside into the left fluid pressure chamber and the right fluid pressure chamber, and the piston is moved in the axial direction by the fluid pressure of the high pressure fluid.

The piston is formed of a cylindrical permanent magnet, and the openings at both ends of the through hole of the cylindrical piston are closed by a hydraulic pressure end plate, and the hydraulic pressure end pressure is applied to the hydraulic end plate.

The cylindrical piston is formed by a single cylinder made of permanent magnets, or a ring or single cylinder made of a plurality of permanent magnets is laminated respectively to form the cylindrical piston.

According to the present invention, a piston constituting the fluid pressure cylinder is employed while adopting a structure of a fluid pressure cylinder that reciprocates the piston by alternately applying the fluid pressures of the left fluid pressure chamber and the right fluid pressure chamber at both ends of the cylinder. The power generation can be induced between the cylinders, the structure of the power generation device can be simplified, the size and the weight can be reduced, and the power generation with good efficiency can be stably obtained.

In addition, the piston is cylindrical and the hydraulic pressure plate allows the hydraulic pressure to move the hydraulic piston, thereby achieving a lighter weight of the piston, and achieving smooth reciprocation and efficient power generation.

In addition, the hydraulic end plate can effectively protect the permanent magnet of the piston from impact and heat.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the example in which the piston (permanent magnet cylinder) of the linear power generation apparatus which concerns on this invention was formed by the single cylinder which consists of permanent magnets.
It is sectional drawing which shows the example in which the piston (permanent magnet cylinder) of the said linear power generation apparatus was formed by laminating | stacking the single cylinder which consists of permanent magnets.
It is sectional drawing which shows the example in which the piston (permanent magnet cylinder) of the said linear power generation apparatus was formed by laminating | stacking the ring which consists of permanent magnets.
It is sectional drawing which shows the example in which the piston (permanent magnet post body) of the said linear power generation apparatus was formed by the unit main body which consists of permanent magnets.
It is sectional drawing which shows the example which provided the fixed permanent magnet cylinder and the fixed cylindrical yoke in the linear power generation apparatus of each example mentioned above.
6A is a cross-sectional view showing a first operation of the linear power generation device for driving the piston by combustion explosion of fuel.
FIG. 6B is a cross-sectional view illustrating a second operation of the linear power generation apparatus for driving the piston by combustion explosion of fuel. FIG.
FIG. 6C is a cross-sectional view illustrating a third operation of the linear power generation device for driving the piston by combustion explosion of fuel. FIG.
6D is a cross-sectional view showing a fourth operation of the linear power generation device for driving the piston by combustion explosion of fuel.
FIG. 7A is a cross-sectional view showing a first operation of the linear power generation device for driving the piston by a high pressure fluid supplied from the outside. FIG.
FIG. 7B is a cross-sectional view illustrating a second operation of the linear power generation device for driving the piston by the high pressure fluid supplied from the outside. FIG.

Best Mode for Carrying Out the Invention The best mode for carrying out the present invention will now be described with reference to Figs.

The linear power generation device according to the present invention includes a fluid pressure in the left fluid pressure chamber 4 in contact with the left end wall 2 of the cylinder 1, and a right fluid pressure chamber 5 in contact with the right end wall 3 of the cylinder 1. It has a fluid pressure cylinder structure which alternately applies the fluid pressure inside to the piston (free piston) 6 in the cylinder 1 to reciprocate the piston 6 in the axial direction.

The cylinder (1) is a piston (free piston) which is made of a closed cylinder of both ends of a round cylinder type in which the left end and the right end are closed by the end walls 2 and 3, and are movable in the axial direction. 6), the left fluid pressure chamber 4 is partitioned between the left end cylindrical wall of the cylinder 1 and the piston 6 and the left end wall 2, and the right end cylindrical wall and the piston 6 of the cylinder 1 The right fluid pressure chamber 5 is partitioned between the right end walls 3.

The linear power generation device according to the present invention takes the above-described hydraulic pressure cylinder structure, while the left hydraulic pressure surface 7 in contact with the left fluid pressure chamber 4 of the piston 6 and the superior pressure surface 8 in contact with the right fluid pressure chamber 5. The permanent magnet zone 9 is formed therebetween, and the electromotive coil zone 11 that extends to the left fluid pressure chamber and the right fluid pressure chamber 4, 5 is formed in the barrel wall between the left and right end walls 2, 3 of the cylinder 1. In addition, the piston 6 having the permanent magnet zone 9 has a configuration in which power generation in the electromotive coil zone 11 is induced by reciprocating movement in the axial direction.

The left fluid pressure chamber and the right fluid pressure chambers 4 and 5 constitute the combustion chamber and move the piston 6 in the axial direction by the fluid pressure caused by the combustion explosion of the fuel in the combustion chamber.

Alternatively, the high pressure fluids 20 and 20 'are alternately supplied from the outside into the left fluid pressure chambers and the right fluid pressure chambers 4 and 5, and the piston 6 is moved in the axial direction by the fluid pressure of the high pressure fluids 20 and 20'. Let's move to the configuration.

As shown in FIG. 1, FIG. 2, and FIG. 3, the piston 6 is formed with the permanent magnet cylinder 6 ', and the hydraulic end plate 14 has the opening surface at both ends of the through hole 13 of the permanent magnet cylinder 6'. ), And the hydraulic pressure plate 14 is configured to receive the hydraulic pressure.

As a specific example, FIG. 1 shows an example in which the cylindrical piston 6 is formed of a permanent magnet cylinder 6 'composed of a single cylinder 6a, and the permanent magnet cylinder 6' is extrapolated to the cylindrical yoke 10. V) and a piston structure in which both end faces are closed by the hydraulic end plate 14.

FIG. 2 shows an example in which the cylindrical piston 6 is formed of a permanent magnet cylinder 6 'having a structure in which a plurality of end cylinders 6c made of permanent magnets are integrally stacked on the same axis. (6 ') is extrapolated to the cylindrical yoke 10, and the opening structure of both ends is closed by the hydraulic end plate 14, and it is set as the piston structure.

3 shows an example in which the cylindrical piston 6 is formed of a permanent magnet cylinder 6 'having a structure in which a plurality of rings 6b made of permanent magnets are integrally laminated at the same axis, and the permanent magnet cylinder ( 6 ') is extrapolated to the cylindrical yoke 10, and a piston structure in which both end faces are closed by the hydraulic end plate 14 is used.

In addition, FIG. 4 shows the piston 6 as a permanent magnet columnar body having a structure in which a plurality of solid main bodies 6d made of permanent magnets are integrally laminated at the same axis. An example in which the pressure-sensitive plate is formed is shown, and the piston structure in which the hydraulic pressure end plates 14 are provided on both end surfaces is shown.

In the case where the ring 6b or the single cylinder 6c is laminated, the length of the piston 6 (permanent magnet zone 9) is increased or decreased by increasing or decreasing the number of laminated rings of the ring 6b or the single cylinder 6c. You can.

Preferably, the hydraulic end plate 14 described in FIGS. 1 to 4 is formed of a heat-resistant plate made of a ceramic plate, a fiber plate, a stone plate, a concrete plate, a carbon plate, a metal plate, or the like.

Moreover, the annular seal 15 which aims at airtight sealing with the inner peripheral surface of the cylinder 1 is provided in the outer peripheral surfaces of both ends of the permanent magnet cylinder 6 'and the permanent magnet pillar 6'. Or the annular seal 15 is provided in the outer peripheral surface of the hydraulic end plate 14 which closes the opening surface of the both ends of the cylindrical piston 6 which consists of a permanent magnet cylinder 6 '.

The polarity of the permanent magnet cylinder 6 ′ and the permanent magnet pillar 6 은 is based on a known electromagnetic induction principle, in which magnetic force lines of the permanent magnet effectively act on the electromechanical coil of the electromechanical coil zone 11. It is decided to arrange.

For example, the inner peripheral part of the permanent magnet cylinder 6 'shown in FIG. 1 is made into an N pole (or S pole), and an outer peripheral part is made into an S pole (or N pole).

Similarly, as shown in FIGS. 2 and 3, even when the single cylinder 6c or the ring 6b is laminated to form the permanent magnet cylinder 6 ', the inner circumferential portion of the single cylinder 6c and the ring 6b is formed. It can be set to N pole (or S pole), and an outer peripheral part can be set as S pole (or N pole).

Fig. 3 shows, as a specific example, a ring 6b having the outer circumferential portion as the N pole and the inner circumferential portion as the S pole, and a ring 6b having the outer circumferential portion as the S pole and the inner circumferential portion as the N pole alternately stacked in the axial direction. The case where the magnetic cylinder 6 'is comprised is shown. Even when the plurality of end cylinders 6c of FIG. 2 are laminated to form the permanent magnet cylinder 6 ', the end cylinders 6c can be laminated with alternating polarities.

Fig. 4 shows an axial stack of a monolith 6d having an S pole in the core and an N pole in the outer circumference, and a 6d monolith having an N pole in the core and an S pole in the outer circumference. One case is shown.

The electromotive coil forming the electromotive coil zone 11 includes a case of forming a plurality of unit electromotive coil groups according to the pole arrangement of each example described above.

Of course, all the end cylinders 6c or rings 6b or 6d forming the permanent magnet cylinder 6 'and the permanent magnet pillar 6' are made the same pole in the outer circumference, and in the inner circumference. It can be set as a laminated structure so that it may become the same pole.

FIG. 5 shows an annular outer circumferential surface of the electromotive coil zone 11 in the cylinder 1 while adopting a means for constituting the piston 6 with the permanent magnet cylinder 6 '(or the permanent magnet pillar 6'). The embodiment which provided the fixed permanent magnet cylinder 1 'which surrounds, and made it generate | occur | produce more efficiently by the electromotive coil is shown.

FIG. 5 also shows an embodiment in which a fixed cylindrical yoke 16 is provided which annularly surrounds the outer circumferential surface of the fixed permanent magnet cylinder 1 '.

Permanent magnet cylinder (6 ') or permanent magnet pillar (6) constituting the fixed permanent magnet cylinder (1'), fixed cylindrical yoke (16) surrounding the fixed permanent magnet cylinder (1 '), and the piston (6). I) and the cylindrical yoke 10 for extrapolating the permanent magnet cylinder 6 'cooperate to increase the power generation efficiency.

As an example, as shown in Fig. 5, a plurality of permanent magnet rings 1a are stacked to form a fixed permanent magnet cylinder 1 ', and the cylinder coil 1 of the electromechanical coil zone 11 is formed in an annular shape. It encloses and surrounds the permanent magnet cylinder 6 'which comprises the piston 6 through the electromechanical coil zone 11 in an annular shape.

In other words, the permanent magnet cylinders 6 'and 1' are disposed on the inner and outer circumferential surfaces of the electromechanical coil of the electromechanical coil zone 11, and the mechanical coil is sandwiched between both permanent magnet cylinders 6 'and 1'. It has a structured.

The permanent magnet ring 1a constituting the fixed permanent magnet cylinder 1 'and the permanent magnet ring 6b constituting the piston 6 are adjacent to each other, as shown in FIGS. 3 and 5, for example. The rings 1a and 6b are laminated so as to be opposite polarities to each other.

Also when the permanent magnet cylinder 6 '(piston 6) is formed of the single cylinder 6c shown in FIG. 2, a plurality of permanent magnet cylinders are laminated to form a fixed permanent magnet cylinder 1', The permanent magnet cylinder 6 'constituting the piston 6 with the cylinder 1' is enclosed in an annular shape, for example, so that adjacent single cylinders in the cylinders 1 'and 6' are of opposite polarities. One configuration can be adopted.

In each example of FIGS. 1-4, the fixed permanent magnet cylinder 1 'surrounding the electromotive coil zone 11 can be provided, and when the fixed permanent magnet cylinder 1' is provided, the piston 6 ), The permanent magnet cylinder 6 'constituting the) is thinned, and the piston permanent magnet pillar 6' is made small in diameter, and the piston 6 can be further reduced in weight.

As described above, when the left fluid pressure chamber and the right fluid pressure chambers 4 and 5 constitute the combustion chamber, for example, the spark plugs 19 are provided on the left and right end walls 2 and 3, and the left and right end walls 2, 3) Alternatively, the fuel injection valve 17 is provided on the left and right end cylinder walls of the cylinder 1, and for example, the exhaust valve 18 is provided in the middle part of the left and right end walls 2, 3 or the left and right end cylinder walls or the cylinder cylinder wall. Install.

6A to 6D, the operation when the left and right fluid pressure chambers 4 and 5 constitute the left and right combustion chambers will be described.

6A and 6B, the left hydraulic pressure of the hydraulic end plate 14 is caused by the combustion explosion of the compressed fuel in the left combustion chamber 4 supplied through the fuel injection valve 17 by the left spark plug 19. A fluid pressure is applied to the surface 7 to move the piston 6 (permanent magnet cylinder 6 'or permanent magnet column 6') to the right on the axis.

As shown in FIGS. 6C and 6D, the piston 6 compresses the fuel (mixed gas with the gas) injected through the right fuel injection valve 17 into the right combustion chamber 5 by the above-described right movement. Ignition with the right spark plug 19 causes combustion fuel to combust and explode in the right combustion chamber 5, impart a fluid pressure to the superior pressure surface 8 of the hydraulic end plate 14, and the piston 6 (permanent). The magnet cylinder 6 'or the permanent magnet pillar 6' is moved to the left on the axis.

The fluid (combustion gas) 20 generated by the combustion explosion in the left and right combustion chambers 4 and 5 is exhausted through the exhaust valve 18 with the reciprocating movement of the piston 6.

By repeating the above operation, the permanent magnet cylinder 6 'or the permanent magnet pillar 6' (permanent magnet zone 9) forming the piston 6 is repeatedly reciprocated to move the electromotive coil band 11. Inspire development in

Next, an embodiment in which the high pressure fluid is supplied to the left fluid pressure chambers and the right fluid pressure chambers 4 and 5 from the outside according to FIGS. 7A and 7B to reciprocate the piston 6 will be described. The high-pressure fluid 20 'may use various gas gases in addition to air and steam.

For example, the fluid supply valve 21 and the exhaust valve 22 are provided in the left and right end walls 2 and 3, and as shown in FIG. 7A, the left fluid supply valve 21 is provided in the left fluid pressure chamber 4. The high pressure fluid 20 'is supplied through the air, and the fluid pressure of the high pressure fluid 20' is applied to the left hydraulic pressure surface 7 of the hydraulic end plate 14 so that the piston 6 (permanent magnet cylinder 6 'or permanent Magnet post body 6 '] is moved to the right on the axis.

Next, as shown in FIG. 7B, when the piston 6 reaches the end of the rightward movement, the high-pressure fluid 20 ′ is passed through the right fluid supply valve 21 in the right fluid pressure chamber 5. And supply the fluid pressure of the high pressure fluid 20 'to the superior pressure surface 8 of the hydraulic end plate 14, thereby providing a piston 6 (permanent magnet barrel 6' or permanent magnet column 6 '). Move to the left on the axis.

By repeating the above operation, the permanent magnet cylinder 6 'or the permanent magnet pillar 6' (permanent magnet zone 9) forming the piston 6 is repeatedly reciprocated to move the electromotive coil band 11. Inspire development in

1: cylinder 1´: fixed permanent magnet cylinder
1a: permanent magnet ring 2: left end wall
3: right end wall 4: left fluid pressure chamber
5: right fluid chamber 6: piston
6´: Permanent magnet cylinder 6˝: Permanent magnet pillar
6a: single cylinder 6b: ring
6c: monolith 6d: monolith
7: Left hydraulic pressure side 8: Storm pressure side
9: permanent magnet band 10: cylindrical yoke
11: mechanical coil band 13: through hole
14: hydraulic end plate 15: annular seal
16: fixed cylinder yoke 17: fuel injection valve
18: exhaust valve 19: spark plug
20: Fluid (combustion gas) 20´: High pressure fluid
21: fluid supply valve 22: exhaust valve

Claims (5)

It has a fluid pressure cylinder structure for reciprocating the piston in the axial direction by applying the fluid pressure in the left fluid pressure chamber in contact with the left end wall of the cylinder and the fluid pressure in the right fluid pressure chamber in contact with the right end wall of the cylinder alternately to the piston in the cylinder. ,
A permanent magnet zone is formed between the left hydraulic pressure surface in contact with the left fluid pressure chamber of the piston and the superior pressure surface in contact with the right fluid pressure chamber, and the left end wall surface and the right side of the cylinder are formed. A mechanism coil zone reaching the left fluid pressure chamber and the right fluid pressure chamber is formed in the wall between the end wall surfaces, and generation of electricity in the mechanism coil zone is induced by reciprocating movement in the axial direction of the piston having the permanent magnet zone. 구성) configuration
Linear power generation device. The method of claim 1,
And the left fluid pressure chamber and the right fluid pressure chamber constitute a combustion chamber, and are configured to move the piston in the axial direction by fluid pressure caused by combustion explosion of fuel in the combustion chamber. The method of claim 1,
And a high pressure fluid alternately supplied from the outside into the left fluid pressure chamber and the right fluid pressure chamber, and move the piston in the axial direction by the fluid pressure of the high pressure fluid. 4. The method according to any one of claims 1 to 3,
The linear power generation device which made the said piston cylindrical and closed the opening surface of the both ends of the through-hole of the said cylindrical piston by the hydraulic pressure end plate which hydraulic-pressure-pressures. The method of claim 4, wherein
A linear power generation apparatus in which a plurality of rings made of permanent magnets or a plurality of end cylinders are stacked to form a cylindrical piston.

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